At first glance it looks like the architects underestimated the weight of the Broadgate Tower and have had to enlist the help of a JLG ULTRA BOOM to take the strain. But that's not what it's really there for.
'JLG Industries, Inc. is the world's leading designer, manufacturer and marketer of access equipment', and the ULTRA BOOM is merely a telescopic boom lift, which I think is business speak for cherry picker (I didn't know what a cherry-picker was (unless you count Jordan) until watching that Simpsons episode). I thin kJLG give the best description of what the boom is for though:
When you're reaching for the sky, reach for JLG's Ultra Series Telescopic Boom Lifts, and the powerful performance geared towards operator convenience.The main reason I'm bothering to write a bout the ULTRA BOOM is the name, which has whispers of Cillit BANG! about it. 'Fed up of being stuck on the ground floor when all the action is up on the 10th? BOOM! and you're there.'
S'pose you could use it hold up a skyscraper though. If you were desperate,